The year was 1966, and America was in the throes of upheaval. Inspired by the goals of the Civil Rights Movement, and by Dr. Martin Luther King Jr.'s vision of a world in which children would be judged not by skin color but by 'the content of their character," Augustus Trowbridge and his wife, Marty, dreamed of establishing a school where children of all races and creeds would be educated together. 'Differences must be immediately experienced, treasured,...